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Festo
8193271
Check valve VBNF-CBA-Q4-Q4-F1A
The Festo 8193271 is an industrial component featuring a non-return function with pneumatic actuation and a non-detenting manual exhaust function. Constructed with a gray PBT housing and operable in any mounting position, this part supports compressed air as per ISO 8573-1:2010 [7:4:4] across a normal nominal flow rate of 120 l/min and a standard flow rate 1->2 (6-0) of 210 l/min. It functions with QS-4 pneumatic connections for connection 1, connection 2, and pilot air port 21, handling an operating pressure up to 1 MPa (10 bar) and a pilot pressure ranging from 2 bar to 10 bar (29 psi to 145 psi) within an ambient temperature range of -10 °C to 60 °C. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 8193271
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8193271.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Valve function
- Non-return function
- Selection of additional function
- Manual exhaust
- Pneumatic connection 1
- QS-4
- Pneumatic connection 2
- QS-4
- Pilot air port 21
- QS-4
- Actuation type
- Manual
- Normal nominal ow rate (normalized to DIN 1343)
- 120 l/min
- Operating pressure
- 1 MPa | 10 bar
- Pilot pressure MPa
- 0.2 MPa...1 MPa
- Pilot pressure
- 2 bar...10 bar
- Pilot pressure psi
- 29 psi...145 psi
- Ambient temperature
- -10 °C...60 °C
- Housing material
- PBT
- Housing colour
- Gray
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Mounting position
- Any
- Actuation type, piloted non-return function
- Pneumatic
- Manual exhaust function
- Non-detenting
- Operating pressure for entire temperature range
- 0.2 bar...10 bar
- Standard ow rate 1->2 (6-0)
- 210 l/min
- Standard nominal ow rate 1->2 (6-5)
- 130 l/min
- Switching time off
- 9 ms
- On switching time
- 6 ms
- Explosion prevention and protection
- Zone 2 (ATEX) | Zone 22 (ATEX)
- Information on operating and pilot media
- Lubricated operation possible
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Suitability for the production of Li-ion batteries
- Suitable for battery production with reduced Cu/Zn/Ni values (F1a)
- Storage temperature
- -20 °C...70 °C
- Temperature of medium
- -10 °C...60 °C
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 8193271. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.